package com.chapter.sample.common.config;

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ThreadPoolExecutor;

@Configuration
@EnableAsync
@Slf4j
public class ExecutorConfig {

//    @Bean("asyncServiceExecutor")
//    public ThreadPoolTaskExecutor asyncServiceExecutor() {
//        log.info("start asyncServiceExecutor");
//        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
//        //配置核心线程数
//        executor.setCorePoolSize(Runtime.getRuntime().availableProcessors() * 2 - 2);
//        //配置最大线程数
//        executor.setMaxPoolSize(Runtime.getRuntime().availableProcessors() * 2);
//        //配置队列大小
//        executor.setQueueCapacity(999);
//        //配置线程池中的线程的名称前缀
//        executor.setThreadNamePrefix("async-thread-");
//        // rejection-policy：当pool已经达到max size的时候，如何处理新任务
//        // CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行
//        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
//        //执行初始化
//        executor.initialize();
//        return executor;
//    }
}
